High-efficiency dismounting device for flange plate of pipeline connection

Abstract

The utility model provides a kind of flange plate high-efficiency dismounting device for pipe connection, including fixed in the water inlet pipe mouth position water inlet pipe flange and fixed in fresh water pipe mouth and with water inlet pipe flange adhere to fresh water pipe flange, water inlet pipe flange and fresh water pipe flange are connected by the multiple connecting plates of circumferential uniform distribution circumferential positioning, the positioning assembly that is arranged perpendicularly to connecting plate is positioned and is connected as a whole with connecting plate and water inlet pipe flange and fresh water pipe flange, and the limiting component for being connected with positioning assembly and being used for the axial location of positioning assembly is equipped on connecting plate, and water inlet pipe flange and fresh water pipe flange are connected as a whole by the multiple connecting plates and positioning assembly and limiting component and can be dismantled.The utility model solves the technical defects that exist when flange plate adopts bolt connection, such as dismounting complicated, low efficiency, easy to rust and slip wire, high maintenance cost and inconvenient inspection, realizes the quick dismounting of flange plate, greatly reduces personnel operation burden, improves maintenance and replacement efficiency, and reduces maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of flange disassembly and assembly technology, specifically relating to an efficient flange disassembly and assembly device for pipe connections. Background Technology

[0002] In electric heater systems that provide preheated fresh water for diesel engine startup and operation, the flanges at the inlet and outlet water pipe ends are typically secured using bolts and other fasteners. However, this traditional connection method has significant drawbacks in practical applications, severely impacting equipment maintenance efficiency and practicality. Specifically: First, when inspecting or maintaining pipelines and electric heaters, or replacing flanges, specialized tools are required to disassemble each bolt individually. This cumbersome and time-consuming process significantly reduces maintenance efficiency. Second, bolts exposed to fresh water and external environmental corrosion are prone to corrosion, and repeated disassembly and assembly can lead to stripped threads. This not only increases disassembly difficulty but also necessitates additional costs to replace damaged bolts, significantly raising equipment maintenance costs. Third, the bolted connection structure of the flanges has inherent limitations, causing inconvenience for daily inspections, maintenance, and troubleshooting, directly reducing the overall practical value of the electric heater system. Therefore, improvements are necessary to address these issues. Utility Model Content

[0003] The technical problem solved by this utility model is to provide an efficient flange disassembly and assembly device for pipe connections. This device uses multiple connecting plates to circumferentially position and connect the inlet pipe flange and the freshwater pipe flange. A positioning component and a limiting component for limiting the positioning component are used to quickly disassemble the connecting plates and the inlet pipe flange and the freshwater pipe flange. This solves the technical defects of bolted flange connections, such as cumbersome disassembly and assembly, low efficiency, easy corrosion and stripping, high maintenance costs, and inconvenient inspection. It enables rapid flange disassembly and assembly, significantly reducing the burden on personnel, improving maintenance and replacement efficiency, reducing maintenance costs, eliminating the limitations of traditional bolted connections, and bringing convenience to daily equipment inspection, maintenance, and troubleshooting.

[0004] The technical solution adopted in this utility model is: a high-efficiency disassembly and assembly device for pipe connection flanges, including an inlet pipe flange fixed at the inlet of a water inlet pipe and a freshwater pipe flange fixed at the inlet of a freshwater pipe and fitting against the inlet pipe flange. The inlet pipe flange and the freshwater pipe flange are circumferentially positioned and connected by multiple connecting plates evenly distributed around the circumference. A positioning component arranged perpendicular to the connecting plates positions and connects the connecting plates and the inlet pipe flange and the freshwater pipe flange as a whole. The connecting plates are provided with a limiting component whose inner end is connected to the positioning component and is used to axially limit the positioning component. The inlet pipe flange and the freshwater pipe flange are detachably connected as a whole by multiple connecting plates, positioning components and limiting components.

[0005] The connecting plate has a U-shaped fan-shaped structure. The outer edge of the side of the water inlet flange and the freshwater flange that are far apart from each other has the same number of slots as the connecting plate. The two sides of the connecting plate are respectively adapted to the slots of the water inlet flange and the freshwater flange, so as to circumferentially position and connect the water inlet flange and the freshwater flange.

[0006] Furthermore, the positioning component includes a positioning rod and a magnetic block. The groove surfaces of the inlet pipe flange and the freshwater pipe flange are provided with positioning holes corresponding to their positions. The insertion hole on one side wall of the U-shaped groove of the connecting plate and the slot on the other side wall are both provided with the positioning holes. The magnetic block is fixed in the slot, and the inner end of the positioning rod passes through the insertion hole and the positioning hole in sequence and is magnetically fixed to the magnetic block. The positioning rod has a circular groove on its body that matches the inner end of the limiting component.

[0007] Furthermore, a rotating block for easy operation is fixed to the outer end of the positioning rod.

[0008] Furthermore, the limiting component includes a pull rod, a spring, and a limiting frame. The outer arc surface of the connecting plate is provided with an installation groove, and the limiting frame is fixed at the opening of the installation groove. The bottom surface of the installation groove is provided with a vertical hole communicating with the insertion hole. The inner end of the pull rod passes through the limiting frame and the vertical hole and is inserted into the circular groove to axially position the positioning rod. The installation groove is provided with a movable plate that is fixedly fitted to the pull rod, and the two ends of the spring fitted on the pull rod are fixedly connected to the movable plate and the bottom of the installation groove, respectively.

[0009] Furthermore, a pull block for easy operation is fixed to the outer end of the pull rod.

[0010] Advantages of this utility model compared to the prior art: 1. This technical solution replaces the traditional bolt connection method by using a connecting plate, positioning component and limiting component. No special tools are required for disassembly and assembly. The flange can be connected and disassembled by simply pulling the limiting component and rotating the positioning component. This greatly simplifies the operation process, shortens the disassembly and assembly time, and significantly improves the efficiency of operation and maintenance. 2. The positioning component of this technical solution adopts a structure in which the magnetic block and the positioning rod are magnetically fixed, which effectively avoids the problem of traditional bolts being corroded by water and external environmental corrosion, thus increasing the difficulty of disassembly; at the same time, the limiting component achieves limiting through spring elastic support, reducing the wear of components caused by repeated disassembly and assembly, effectively avoiding damage such as bolt stripping, and reducing equipment maintenance costs. 3. The connecting plate of this technical solution adopts a U-shaped fan-shaped plate structure. It is circumferentially positioned with the two flanges through the slot to avoid relative rotation of the two flanges. The positioning rod passes through the positioning holes of the connecting plate and the inlet pipe flange and the fresh water pipe flange and is fixed by magnetic blocks. In addition, the positioning rod is axially limited by the limiting component to ensure the axial position of the two flanges. The multiple positioning structure ensures the stability of the connection between the two flanges and the reliable sealing of the relative position, meeting the equipment operation requirements. 4. The detachable structure design of this technical solution allows for quick disassembly of the flange for internal inspection during routine inspections, making troubleshooting more convenient and significantly enhancing the practical value of the equipment. It is suitable for scenarios where the efficiency and reliability of flange disassembly and assembly are high for diesel engine preheating freshwater electric heater devices. Attached Figure Description

[0011] Figure 1 This is an exploded structural diagram of the present invention; Figure 2 This is an assembly diagram of the present invention; Figure 3 This is a schematic diagram of the connection structure between the connecting plate and the limiting component of this utility model; Figure 4 This is a schematic diagram of the connecting plate and positioning assembly of this utility model. Detailed Implementation

[0012] The following will refer to the embodiments of this utility model. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0013] It should be noted that, unless otherwise stated herein, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0015] High-efficiency flange disassembly and assembly device for pipe connections, such as Figure 1-2 As shown, the device includes an inlet pipe flange 2 (i.e., a water pipe providing fresh water) fixed at the inlet of the inlet pipe 1, and a fresh water pipe flange 3 fixed at the inlet of the fresh water pipe and fitting against the inlet pipe flange 2. The inlet pipe flange 2 and the fresh water pipe flange 3 are circumferentially connected by multiple connecting plates 4 evenly distributed around the circumference. A positioning component perpendicular to the connecting plates 4 positions and connects the connecting plates 4 and the inlet pipe flange 2 and the fresh water pipe flange 3 into a single unit. Multiple connecting plates 4 are evenly distributed around the circumference to achieve circumferential positioning of the inlet pipe flange 2 and the fresh water pipe flange 3. The positioning component is perpendicular to the connecting plates 4 and is used to position and connect the connecting plates 4 and the inlet pipe flange 2 and the fresh water pipe flange 3 into a single unit. The connecting plates 4 are provided with a limiting component whose inner end is connected to the positioning component and is used to axially limit the positioning component. The inlet pipe flange 2 and the fresh water pipe flange 3 are composed of multiple connecting plates 4. The connecting plate 4, positioning component, and limiting component are detachably connected as one unit. The limiting component is used to axially position the positioning component to prevent it from loosening, thereby ensuring the stability of the connection between the water inlet pipe flange 2 and the freshwater pipe flange 3. In the above structure, multiple connecting plates 4 are used to circumferentially position and connect the water inlet pipe flange 2 and the freshwater pipe flange 3. The positioning component and the limiting component used to limit the positioning component are used to quickly connect the connecting plate 4 and the water inlet pipe flange 2 and the freshwater pipe flange 3. This solves the technical defects of bolted flange connections, such as cumbersome disassembly and assembly, low efficiency, easy corrosion and stripping, high maintenance costs, and inconvenient inspection. It realizes the rapid disassembly and assembly of flanges, greatly reduces the burden of personnel operation, improves maintenance and replacement efficiency, reduces maintenance costs, eliminates the limitations of traditional bolted connections, and brings convenience to daily equipment inspection, maintenance, and troubleshooting.

[0016] like Figure 1As shown, the circumferential positioning connection structure between the connecting plate 4 and the inlet pipe flange 2 and the freshwater pipe flange 3 is as follows: The connecting plate 4 has a U-shaped fan-shaped plate structure to fit the outer arc of the inlet pipe flange 2 and the freshwater pipe flange 3. On the outer edge of the side of the inlet pipe flange 2 and the freshwater pipe flange 3 that is furthest from each other, there are grooves 5 evenly distributed around the circumference, the same number as the connecting plate 4. The two sides of the connecting plate 4 are respectively fitted into the grooves 5 of the inlet pipe flange 2 and the freshwater pipe flange 3. The inlet pipe flange 2 and the freshwater pipe flange 3 are circumferentially positioned and connected. In the above structure, the connecting plate 4 adopts a U-shaped fan-shaped plate structure, which is circumferentially positioned with the two flanges through the slot 5 to prevent relative rotation of the two flanges. During installation, the two sides of the connecting plate 4 are respectively embedded into the slots 5 of the inlet pipe flange 2 and the freshwater pipe flange 3 to complete the circumferential positioning of the inlet pipe flange 2 and the freshwater pipe flange 3, thus preventing relative rotation of the inlet pipe flange 2 and the freshwater pipe flange 3 after connection.

[0017] like Figure 1-2 As shown in Figure 4, the specific structure of the positioning component is as follows: The positioning component includes a positioning rod 6 and a magnetic block 7. Positioning holes 8 are formed on the groove surfaces of the inlet pipe flange 2 and the freshwater pipe flange 3, corresponding to their positions. The insertion hole 9 on one side of the U-shaped groove wall of the connecting plate 4 and the slot 10 on the other side of the groove wall correspond to the positions of the positioning holes 8. The magnetic block 7 is made of a strong magnetic material and is fixed inside the slot 10. The inner end of the positioning rod 6 passes through the insertion hole 9 and the positioning hole 8 in sequence and is magnetically fixed to the magnetic block 7, achieving axial positioning of the connecting plate 4 with the inlet pipe flange 2 and the freshwater pipe flange 3. A circular groove 11 adapted to the inner end of the limiting component is formed on the body of the positioning rod 6, used to cooperate with the limiting component to achieve axial limiting. Specifically, a rotating block 12 for easy operation is fixed to the outer end of the positioning rod 6. The rotating block 12 can... The structure is designed in a hexagonal or cross shape for easy hand-held rotation. In the above structure, the positioning component adopts a magnetic attraction block 7 and a positioning rod 6 for magnetic fixation. This effectively avoids the problem of traditional bolts coming into contact with water and being corroded by the external environment, which increases the difficulty of disassembly. Moreover, no special tools are needed. Once the limiting component and the positioning rod 6 are released from their limiting positions, the positioning rod 6 can be pulled out, making the operation convenient and quick and improving the efficiency of the positioning rod 6's assembly and disassembly. The positioning rod 6 axially passes through the positioning holes of the connecting plate 4 and the water inlet pipe flange 2 and the fresh water pipe flange 3 and is fixed by the magnetic attraction block 7. In conjunction with the limiting component, the positioning rod is axially limited to ensure the axial position of the water inlet pipe flange 2 and the fresh water pipe flange 3. The multiple positioning structure ensures the stability of the connection between the water inlet pipe flange 2 and the fresh water pipe flange 3 and the reliable sealing of their relative positions, meeting the equipment's operating requirements. like Figure 1-3As shown, the specific structure of the limiting component is as follows: The limiting component includes a pull rod 13, a spring 14, and a limiting frame 15. A mounting groove 16 is formed on the outer arc surface of the connecting plate 4, and a limiting frame 15 is fixed at the opening of the mounting groove 16. The limiting frame 15 is used to limit the movable plate 17, preventing it from falling out of the mounting groove 16. A vertical hole communicating with the insertion hole 9 is formed on the bottom surface of the mounting groove 16, and the inner end of the pull rod 13 passes through the limiting frame 15 and the vertical hole and is inserted into the circular groove 11 to axially position the positioning rod 6, preventing the positioning rod 6 from axially moving or falling out during use. A movable plate 17 is provided in the mounting groove 16 and is fitted and fixed to the pull rod 13, and a spring 14 is fitted on the pull rod 13. Both ends are fixedly connected to the bottom of the movable plate 17 and the mounting groove 16, respectively. Under the elastic action of the spring 14, the movable plate 17 can be pushed to drive the pull rod 13 to always maintain an inward trend, ensuring that the inner end of the pull rod 13 is stably inserted into the circular groove 11. Specifically, the outer end of the pull rod 13 is fixed with a pull block 18 that is easy to operate. The size of the pull block 18 is larger than the opening size of the limiting frame 15, so as to prevent the pull rod 13 from falling completely into the mounting groove 16, and at the same time, it is convenient to pull by hand. In the above structure, the limiting component uses the spring 14 to elastically support the pull rod 13 to limit the positioning rod 6, reduce the wear of components caused by repeated disassembly and assembly, effectively avoid damage such as stripped bolts, and reduce equipment maintenance costs. Installation process: 1) First, align and fit the inlet pipe flange 2 with the fresh water pipe flange 3; 2) Along the circumferential direction of the inlet pipe flange 2 and the freshwater pipe flange 3, the two sides of the multiple connecting plates 4 are respectively embedded into the corresponding slots 5 to complete the circumferential positioning of the inlet pipe flange 2 and the freshwater pipe flange 3. 3) Holding the rotating block 12, pass the inner end of the positioning rod 6 through the insertion hole 9 of the connecting plate 4 and the positioning holes 8 of the water inlet flange 2 and the fresh water flange 3 in sequence until the positioning rod 6 is magnetically attracted and fixed to the magnetic block 7 in the slot 10; at this time, the circular groove 11 on the positioning rod 6 is aligned with the vertical hole at the bottom of the mounting groove 16. Under the elastic thrust of the spring 14, the moving plate 17 drives the pull rod 13 to move inward, and the inner end of the pull rod 13 is inserted into the circular groove 11, completing the axial positioning of the positioning component, and the two flanges are installed and fixed.

[0018] The disassembly process is as follows: 1) Pull the lever 13 outward with the hand lever 18. The lever 13 drives the moving plate 17 to move outward and compress the spring 14 until the inner end of the lever 13 disengages from the circular groove 11 on the positioning rod 6, thus releasing the axial limit on the positioning component. 2) Hold the rotating block 12 and rotate the positioning rod 6 outward to overcome the attraction of the magnetic block 7 and remove the positioning rod 6 from the insertion hole 9 and the positioning hole 8; 3) Remove multiple connecting plates 4 along the direction of the slot 5 to separate the water inlet flange 2 from the freshwater flange 3 and complete the disassembly.

[0019] This technical solution replaces the traditional bolt connection method by using the connection plate 4, positioning component and limit component. The disassembly and assembly process does not require special tools. The flange can be connected and disassembled by simply operating the limit component by pulling block 18 and the positioning component by rotating block 12. This greatly simplifies the operation process, shortens the disassembly and assembly time, and significantly improves the efficiency of operation and maintenance.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency flange disassembly and assembly device for pipe connections, characterized in that: It includes an inlet pipe flange (2) fixed at the inlet of the inlet pipe (1) and a fresh water pipe flange (3) fixed at the inlet of the fresh water pipe and fitting together with the inlet pipe flange (2). The inlet pipe flange (2) and the fresh water pipe flange (3) are circumferentially positioned and connected by multiple connecting plates (4) evenly distributed around the circumference. The positioning component set perpendicular to the connecting plate (4) positions and connects the connecting plate (4) and the inlet pipe flange (2) and the fresh water pipe flange (3) into one unit. The connecting plate (4) is provided with a limiting component whose inner end is connected to the positioning component and is used to axially limit the positioning component. The inlet pipe flange (2) and the fresh water pipe flange (3) are detachably connected together by multiple connecting plates (4), the positioning component and the limiting component.

2. The high-efficiency flange disassembly and assembly device for pipe connections according to claim 1, characterized in that: The connecting plate (4) has a U-shaped fan-shaped plate structure. The outer edge of the side of the water inlet flange (2) and the fresh water flange (3) that are far apart from each other has the same number of slots (5) as the connecting plate (4). The two sides of the connecting plate (4) are respectively adapted to the slots (5) of the water inlet flange (2) and the fresh water flange (3) to position and connect the water inlet flange (2) and the fresh water flange (3) in the circumferential direction.

3. The high-efficiency disassembly and assembly device for pipe connections according to claim 2, characterized in that: The positioning component includes a positioning rod (6) and a magnetic block (7). The grooves (5) of the water inlet flange (2) and the freshwater flange (3) are provided with positioning holes (8) corresponding to their positions. The insertion hole (9) on one side of the U-shaped groove of the connecting plate (4) and the slot (10) on the other side of the groove are both corresponding to the positioning hole (8). The magnetic block (7) is fixed in the slot (10). The inner end of the positioning rod (6) passes through the insertion hole (9) and the positioning hole (8) in sequence and is magnetically fixed to the magnetic block (7). The positioning rod (6) has a circular groove (11) that is adapted to the inner end of the limiting component.

4. The high-efficiency flange disassembly and assembly device for pipe connections according to claim 3, characterized in that: The outer end of the positioning rod (6) is fixed with a rotating block (12) for easy operation.

5. The high-efficiency flange disassembly and assembly device for pipe connections according to claim 3, characterized in that: The limiting component includes a pull rod (13), a spring (14) and a limiting frame (15). The outer arc surface of the connecting plate (4) is provided with an installation groove (16), and the limiting frame (15) is fixed at the groove opening of the installation groove (16). The bottom surface of the installation groove (16) is provided with a vertical hole that communicates with the insertion hole (9). The inner end of the pull rod (13) passes through the limiting frame (15) and the vertical hole and is inserted into the circular groove (11) to axially position the positioning rod (6). The installation groove (16) is provided with a movable plate (17) that is fixedly fitted to the pull rod (13). The two ends of the spring (14) fitted on the pull rod (13) are fixedly connected to the movable plate (17) and the bottom of the installation groove (16) respectively.

6. The high-efficiency flange disassembly and assembly device for pipe connections according to claim 5, characterized in that: The outer end of the pull rod (13) is fixed with a pull block (18) for easy operation.

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